Adhesive to be employed in the manufacture of paper-walled vessels.



l orrrcn.

FREDERICK P. WOOD, OF DETROIT, MICHIGAN, ASSIGNOR TO DETROIT CAN COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF NEW JERSEY.

ADHESIVE TO BE EMPLOYED IN THE MANUFACTURE OF PA PERFWALLED VESSELS.

No Drawing.

To all whom it may concern:

Be it known that I, FREDERICK P. 7001), a subject of the'Kingdom of Great Britain, residing in Detroit, in the county of Wayne and State of Michigan, have invented a new and useful Improvement in Adhesives to be Employed in the Manufacture of Paper- VValled Vessels, of which the following is a specification. g

This invention relates to an adhesive to be employed in the manufacture of paperwalled vessels and consists in the new compound hereinafter more fully set forth and claimed.

In the art of making paper-walled vessels, damp-proof quality may be imparted to the Walls by making them of two or more layers of paper cemented together by some adhesive which has the quality of rendering the compound paper structure impervious to air,

gases and moisture, and a film of which will remain unabsorbed between the layers of paper.

It is the object of the present invention to produce such an adhesive having the following qualities: It shall have the property of becoming fluid and adhesive by heat and set or hard by cooling; it shall have a higher melting point after a time than when first applied; it shall have suflicient permanent flexibility so that the walls shall not crack after aging or when dented in handlin it shall impart no taste or odor to the contents of the vessel in the construction of the walls of which it is employed; it shall be unaffected by the contents of thevessel; it shall I be of such nature as not to be absorbed by the capillary attraction of the cellulose in the said walls; it'shallbe cheap.

I have found that an adhesive containing all of the foregoing qualities can be compounded, preferably of gilsonite, a natural asphaltite that may be described as being of the specific gravity at 77 Fahrenheit of 1.06 to 1.10, having a meltingpoint of 250 to 350 Fahrenheit, a fixed carbon content of 10 to 20 per centum having a conchoidal fracture, a bright luster, and softening and flowing in flame without splittin burning or decrepitatin Or in lieu .of gi sonite the petroleum-resi uum known as parolite and which has quite similar qualities, appearance and properties, may be used. I have found also that elaterite may be employed if PatentedApr.27,1l9l5.

fused in China wood oil. I have not found it advisable to use elateritedissolved in China wood oil except for the manufacture of articles where the offensive odor that pertains to China wood oil can be disregarded. I prefer to mix with this asphaltite or asphaltite-likeelement a portion of some nonoxidizable substance, such as Vaseline, petrolatum or one of the non-oxidizable vegetable oils, to prevent the compound from becoming brittle when cold or. aged, and thus to overcome all danger of the layer of adhesive being cracked by the bending or denting of the aper walls in which it is used. I also prefer to add a portion of some oxidizable oil, as for example, ordinary linseed oil boiled with litharge, such as commonly used in paint. The purpose of this latter addition is to promote a subsequent hardening or toughening of the adhesive after application, which is brought about by the subsequent oxidization of the linseed or other oxidizable oil. This subsequent oxidation acts to raise the melting point of the adhesive after it has been applied, thus enabling the completed vessel made with such walls to stand a higher degree of heat without disintegration than it otherwise could endure.

The best formula for making the improved compound of this invention that I now know is the following: Take of gilsonite 300 lbs;

of the boiled linseed oil 40 lbs; of Vaseline paper in any of the well known methods of making pasteboard, pressure preferablybe- It is ing brought to bear uponthe compound sheet to perfect the union. It is not necessary, however, that the two sheets of paper shall be united immediatel after coating one of them, because the a hesive upon the q in the subsequent manufacture of articles from the material, and this property enables the joints in a paper-walled vessel to be coated sheet may be allowed to become cold when it willpresent a smooth, hard surface, vnot sticky, and which may beeasily handled.

weaved readily made by the use of hea't'and pressure alone'long after the coating of adhesive has been applied.

I claim 1. A fusible, adhesive compound which becomes adhesive solely by fusion and which when cold is not sticky, containing as'a principal ingredient thereof-a fusible asphaltite,

and also containing a non-drying oil, substantially as specified.

2. A fusible, adhesive compound which becomes adhesive so"lely by'fusion, contain ing .as a principal ingredient thereof, gilsonite,. and containing also a drying oil and a non-drying oil, substantially as specified.

3.' A fusible, adhesive compound which FREDERICK P. WOOD.

Witnesses:

. ARTHUR F.' HENZE, E. F. CIDUGH. 

